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SPOF

This directory contains bad exaple of application architecture with dictionaries on a separated instance.

How to start:

cartridge build
cartridge start -d
cartridge replicasets setup --bootstrap-vshard

You will see WebUI on http://localhost:8081.

Roles code is in app/roles folder.

How to fix?

  • Select roles app.roles.dictionary on router

OR

  • Add replicas to dictionary replicaset
  • Change function app.roles.api.get_employees_by_salary: 
    local connection = assert(cartridge_rpc.get_connection('app.roles.dictionary', {leader_only = false}))
local deps_data = connection:call('select', department_ids)
  • (Optional) add ALL_RW to this replicaset or make space box.space.departments synchronious: 
    box.space.departments:alter{is_sync = true}